Revert "Remove redundant SSH client configuration."

This reverts commit 816846c761.

tasks/bootstrap.yml

@@ -12,9 +12,20 @@
     url: "https://{{ CLOUD_SERVER }}/s/{{ lookup('env','KEY') }}/download?path=%2F&files=secrets.tar.gz.enc"
     dest: "{{ WORKDIR }}/secrets.tar.gz.enc"
 
+- name: Create /root/.ssh directory
+  ansible.builtin.file:
+    path: /root/.ssh
+    state: directory
+    mode: '0700'
+
 - name: Extract from secrets.tar.gz.enc
   shell: "openssl enc -aes-256-cbc -md md5 -pass env:SECRETS_ARCHIVE_PASSPHRASE -d -in {{ WORKDIR }}/secrets.tar.gz.enc | tar -zxv -C {{ WORKDIR }}"
 
+- name: Change SSH private key permissions
+  ansible.builtin.file:
+    path: /root/.ssh/id_rsa
+    mode: '0400'
+
 - name: Retrieve documentation
   ansible.builtin.get_url:
     url: "https://{{ CLOUD_SERVER }}/s/{{ lookup('env','DOC_KEY') }}/download"